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| SI5345-44-42 Datasheet, PDF (38/62 Pages) Silicon Laboratories – 10-CHANNEL | |||
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Si5345/44/42
5.8. Outputs
Each driver has a configurable voltage swing and common mode voltage covering a wide variety of differential
signal formats. In addition to supporting differential signals, any of the outputs can be configured as single-ended
LVCMOS (3.3 V, 2.5 V, or 1.8 V) providing up to 20 single-ended outputs, or any combination of differential and
single-ended outputs.
5.8.1. Output Crosspoint
A crosspoint allows any of the output drivers to connect with any of the MultiSynths as shown in Figure 22. The
crosspoint configuration is programmable and can be stored in NVM so that the desired output configuration is
ready at power up.
Multi
Synth
÷
N0n
N0d
t0
÷R0
VDDO0
OUT0
OUT0
Multi
Synth
÷
N1n
N1d
t1
Multi
Synth
÷
N2n
N2d
t2
Multi
Synth
÷
N3n
N3d
t3
Multi
Synth
÷
N4n
N4d
t4
÷R1
÷R2
÷R3
÷R4
÷R5
÷R6
÷R7
÷R8
÷R9
VDDO1
OUT1
OUT1
VDDO2
OUT2
OUT2
VDDO3
OUT3
OUT3
VDDO4
OUT4
OUT4
VDDO5
OUT5
OUT5
VDDO6
OUT6
OUT6
VDDO7
OUT7
OUT7
VDDO8
OUT8
OUT8
VDDO9
OUT9
OUT9
Figure 22. MultiSynth to Output Driver Crosspoint
5.8.2. Output Signal Format
The differential output swing and common mode voltage are both fully programmable covering a wide variety of
signal formats including LVDS and LVPECL. In addition to supporting differential signals, any of the outputs can be
configured as LVCMOS (3.3 V, 2.5 V, or 1.8 V) drivers providing up to 20 single-ended outputs, or any combination
of differential and single-ended outputs.
38
Rev. 1.0
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